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Ultrasound and CT scan play complimentary roles for the evaluation of indeterminate renal masses. Fast MR imaging with and without gadolinium is performed for characterization of renal masses when patients have a contraindication to iodinated contrast material. Radiologists have a primary role in detecting and managing indeterminate renal masses.

Adequate radiologic demonstration of the extent of renal injury following blunt abdominal trauma is an important guide to therapy. Traditionally, the evaluation has been based on urographic and/or angiographic studies. This report details the results of computed tomographic (CT) evaluation of suspected renal injuries in ten patients. Renal injuries were demonstrated by CT in nine of these patients. Abnormalities demonstrated were subcapsular/perinephric hematomas, intrarenal hematomas, renal lacerations, segmental infarcts, and contrast material extravasation. This study suggests that CT is valuable in providing further definition of urographic abnormalities and in avoiding the necessity for angiography in otherwise stable patients.

The development and refinement of computed tomography have revolutionized the diagnostic evaluation of patients in urologic practice. This article reviews the applications and interpretation, as well as the limitations, of renal computed tomography and compares this modality with other imaging studies of the kidney.

Three straightforward radiologic examinations are the cornerstone of the diagnosis of a wide variety of urinary tract pathology that may be encountered in the emergency department. This article reviews some technical aspects of the examinations, the radiologic findings, and some controversial aspects of the diagnosis and subsequent management of these patients.